Finding the Fourth Proportional to 132,648.56, 199,009.20 and 39,154.28

Step by Step Solution

1. Step 1: Write the proportion equation
   132,648.56 : 199,009.20 = 39,154.28 : x
2. Step 2: Convert to fraction form
   132,648.56/199,009.20 = 39,154.28/x
3. Step 3: Cross multiply
   132,648.56x = 199,009.20 × 39,154.28
4. Step 4: Simplify right side
   132,648.56x = 7,792,061,939.38
5. Step 5: Solve for x
   x = 7,792,061,939.38/132,648.56
6. Step 6: Final answer
   x = 58,742.15